The Hach si792x P pH/ORP 2 wire transmitters are designed for use with Hach GLI world-class pH/ORP sensors. Hach GLI differential sensors offer unsurpassed measurement accuracy, greater reliability, with the longest duty cycle available. The working life of the sensor is extended to three times that of conventional 2-electrode combination pH sensor through the use of a unique, replaceable salt-bridge. The Hach si792x P 2-wire transmitter also offers
* Large, clear display
* Icon-based messages for system status
* Sensor diagnostics such as asymmetry potential, slope, response time, cable integrity, glass, and reference impedance
* System alarm indicated by red LED
* HART communication for Class I, Division 2 or Class I, Division 1 applications